A look at calibrating colors in OS X with the Spyder 3 colorimeter. It's clear people have the option between best-looking colors and uniformity of colors across multiple displays.

With the Datacolor Spyder5Elite, you can calibrate all of your monitors, laptop screens, and projectors quickly and easily and keep them fine-tuned to ensure consistent color and gray-scale accuracy.

The calibration process works by coordinating manual changes to the TV's settings with data returned via a USB connection from the colorimeter to your computer.

The Datacolor Spyder4 Pro is an affordable display calibration system that will improve your monitor's image quality.

Datacolor introduced the Spyder4 line of highly advanced colorimeters able to calibrate monitors, laptops, projectors, TVs, iPads and even iPhones.

With the Datacolor Spyder5Elite, you can calibrate all of your monitors, laptop screens, and projectors quickly and easily and keep them fine-tuned to ensure consistent color and gray-scale accuracy.

The Spyder5 Elite is Datacolor's top-of-the-line colorimeter tool this year, providing users with an easy to use experience to accurately calibrate and recalibrate their external monitors ...

And a third is color calibration. But there are always workarounds, and DataColor, the company behind the Spyder colorimeter, will now let photographers and designers color-manage their iPads.

The color calibration tool did the best job it could i would guess. I don't think the colorimeter is defective. It just can't adjust the output for your screen so it's not green-tinted.